package org.chen.rfid.config.security;

import org.springframework.security.access.AccessDecisionManager;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.security.access.ConfigAttribute;
import org.springframework.security.authentication.AnonymousAuthenticationToken;
import org.springframework.security.authentication.InsufficientAuthenticationException;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.stereotype.Component;

import java.util.Collection;

/**
 * @author 程强
 * @date 2020年01月16日 14:53
 * @Description:
 */
@Component
public class CustomUrlAccessDecisionManager implements AccessDecisionManager {
    @Override
    public void decide(Authentication authentication, Object object, Collection<ConfigAttribute> configAttributes)
            throws AccessDeniedException, InsufficientAuthenticationException {
        for (ConfigAttribute configAttribute: configAttributes) {
            String needRole = configAttribute.getAttribute();
            if ("ROLE_LOGIN".equals(needRole)){
                if (authentication instanceof AnonymousAuthenticationToken){
                    throw new AccessDeniedException("尚未登陆,请登录！");
                }else {
                    return;
                }
            }
            Collection<? extends GrantedAuthority> authorities = authentication.getAuthorities();
            for (GrantedAuthority authority :authorities) {
                if (authority.getAuthority().equals(needRole)){
                    return;
                }
            }
        }
        throw new AccessDeniedException("权限不足,请联系管理员！");
    }

    @Override
    public boolean supports(ConfigAttribute attribute) {
        return true;
    }

    @Override
    public boolean supports(Class<?> clazz) {
        return true;
    }
}
